The PollenCheck API lets users query the service for pollen forecasts and location information, and register new locations. Responses are formatted in JSON.
PollenCheck provides pollen forecasts in Europe. Four-day forecasts are available at any city in Europe, updated daily and including data every 6 hours. PollenCheck provides daily forecasts for various pollens: Grass, Olive, Birch, Ragweed. There are forecasts available for many European cities. If your city is not among them just register it.